Gen Ishida

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Yamaguchi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing hard disk substrate
- Patent number 9,297,078
- Issue date Mar 29, 2016
- Toyo Kohan Co., Ltd.
- Gen Ishida
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method of surface-finishing glass substrate for magnetic disks and...
- Patent number 8,109,808
- Issue date Feb 7, 2012
- Toyo Kohan Co., Ltd.
- Yoshio Uchiyama
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING HARD DISK SUBSTRATE
- Publication number 20150125598
- Publication date May 7, 2015
- TOYO KOHAN CO., LTD
- Gen Ishida
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
METHOD FOR PRODUCING HARD DISK SUBSTRATE
- Publication number 20150064347
- Publication date Mar 5, 2015
- TOYO KOHAN CO., LTD
- Gen Ishida
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD OF SURFACE-FINISHING GLASS SUBSTRATE FOR MAGNETIC DISKS AND...
- Publication number 20100266874
- Publication date Oct 21, 2010
- Yoshio Uchiyama
- B24 - GRINDING POLISHING